Title :
A New Interleaved Three-Phase Single-Stage PFC AC–DC Converter With Flying Capacitor
Author :
Narimani, Mehdi ; Moschopoulos, Gerry
Author_Institution :
Dept. of Electr. & Comput. Eng., Ryerson Univ., Toronto, ON, Canada
Abstract :
A new interleaved three-phase PFC ac-dc single-stage multilevel is proposed in this paper. The proposed converter can operate with reduced input current ripple and peak switch currents due to its interleaved structure, a continuous output inductor current due to its three-level structure, and improved light-load efficiency as some of its switches can be turned ON softly. In the paper, the operation of the converter is explained, the steady-state characteristics of the new converter are determined, and its design is discussed. The feasibility of the new converter is confirmed with experimental results obtained from a prototype converter, and its efficiency is compared to that of another multilevel converter of similar type.
Keywords :
AC-DC power convertors; power capacitors; power factor correction; continuous output inductor current; flying capacitor; improved light-load efficiency; interleaved three-phase single-stage PFC multilevel AC-DC converter; peak switch currents; reduced input current ripple; steady-state characteristics; three-level structure; Capacitance; Capacitors; Discharges (electric); Inductors; Power harmonic filters; Switches; Zero voltage switching; AC???DC power factor correction; phase-shifted modulation; single-stage converters; three-level converters; three-phase systems;
Journal_Title :
Power Electronics, IEEE Transactions on
DOI :
10.1109/TPEL.2014.2340371
